Perennial: Deer resistant. Drought and coast tolerant. Fire retardant. Yo Yo is more restrained and compact than others. Good for rock walls, rock gardens, edges, and as a ground cover. Tolerates poor, dry soil. Very fine silvery green foliage. Free flowering. Attracts butterflies. Bloom time: spring-summer. Bloom color: white. Mat forming. Height: 4-6 inches. Width: 12-15 inches. Exposure: sun/part shade. Water: moderate/dry. USDA Z4.